Pensmore Castle

Highlandville, Missouri. USA


Year Completed

Project Summary


Pensmore is a 75,000 sq. ft. (6,970 m2) manor. The structure is designed to withstand a direct hit from an EF5 tornado. The construction of this building is a practical application example of new building technologies for safer, more efficient, greener buildings. The hope is to build homes, hospitals, and schools among other structures with these better technologies.

The exterior cladding has been designed to leverage a stainless steel version of Helix® Micro-Rebar™ reinforcement. This is to ensure that there will be no rust, even over the next several hundred years.




Highlandville, MO

Original Design

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Huff Construction


Walls, Slabs, Precast Trim and Cladding

Helix ® Dosage

Walls - 22.5 - 45 lb/yd3. Slabs - 34 1b/yd3. Roof - 60 lb/yd3. Cladding - up to 140/lb/yd3

Increase In Shear Strength:

Increase In Modulus of Rupture:

Increase In Durability:

Increase Construction Speed:

Reduction In Carbon Footprint:




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Contact Helix

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